Apparatus and method for controlling bias adaptation bias of...

Details Apparatus and method for controlling bias adaptation bias of... Apparatus and method for controlling bias adaptation bias of...

2007-12-25

2007-12-25

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S285000, C330S297000

Reexamination Certificate

active

11259650

ABSTRACT:
An apparatus and a method for controlling a bias adaptation bias of a high power amplifier. In the high power amplifier, a coupling operation is performed with respect to an input signal with a predetermined voltage, an amount of attenuation used for attenuating a voltage of the coupled input signal is adjusted corresponding to the voltage of the input signal, a bias adaptation bias is created correspondingly to a voltage obtained by attenuating the voltage of the input signal by the amount of the attenuation, and the coupled input signal is amplified corresponding to the bias adaptation bias, thereby performing a signal amplifying operation for maintaining linearity of an input signal, regardless of an average input voltage intensity of the input signal.

REFERENCES:
patent: 7193470 (2007-03-01), Lee et al.

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